%%
%% The LaTeX Companion, 3ed
%%
%% Example 16-2-6 on page II-478 in "Customizing citation references and the bibliography with biblatex".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{135.0pt}
%
% Use biber program

%StartShownPreambleCommands
\usepackage[style=ext-numeric]{biblatex}
\addbibresource{tlc.bib}
\DeclareOuterCiteDelims{cite}{\bibopenparen}{\bibcloseparen}
%StopShownPreambleCommands

\begin{document}
Color support for \LaTeX{} is described in \cite{LGC97} and
the \texttt{hyperref} package in \cite[35-67]{LWC99}.  \par
See also \cite{MR-PQ,Southall}.
\end{document}
